A.six months
B.two years
C.four years
D.five years
您可能感興趣的試卷
你可能感興趣的試題
A.the chief engineer officer
B.the master of the ship
C.the manager of the company
D.the Administration
A.bridge log
B.Master’s log
C.engine room log
D.oil record book
A.local port authority
B.Corps of Engineers
C.USCoast Guard
D.state pollution board
A.substandard ship
B.standard ship
C.over-standard ship
D.reference ship
A.The overall condition of the bearing surface should be examined
B.The shaft liner should be inspected for cracks and tested to insure a tight fit
C.The stern tube should be tested for cracks with dye penetrant
D.all of above
最新試題
Which one is NOT the ‘clear grounds’ for a more detailed inspection?()
()are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?()
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?()
To shut down a diesel engine after it exceeds the set maximum speed,which type of device listed should be used?()
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?()
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?()
To proceed to the assistance of a ship in distress is()
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is()
Diesel engine air start system check valves are opened by ()